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Wormlike Micelle Formation and Rheological Behavior in the Aqueous Solutions of Mixed Sulfate Gemini Surfactant without Spacer Group and Dodecyltrimethylammonium Bromide
Author(s) -
Pei Xiaomei,
Zhao Jianxi,
You Yi,
Liu Yufang,
Wei Xilian
Publication year - 2011
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201180348
Subject(s) - chemistry , micelle , pulmonary surfactant , aqueous solution , rheology , viscoelasticity , bromide , viscosity , shear thinning , polymer chemistry , chemical engineering , inorganic chemistry , organic chemistry , thermodynamics , biochemistry , physics , engineering
The rheological behavior of the aqueous solutions of mixed sulfate gemini surfactant with no spacer group, referred to as d ‐C 12 S, and dodecyltrimethylammonium bromide (C 12 TABr) at a total concentration of 100 mmol·L −1 but different molar ratios of C 12 TABr to d ‐C 12 S ( α 1 ) was investigated using steady rate and frequency sweep measurements. The wormlike micelles were formed over a narrow α 1 range of 0.20–0.27. The viscoelastic solutions exhibited Maxwell fluid behavior. At the optimum molar ratio of 0.25, the zero‐shear viscosity was as high as 600 Pa·s and the length of the mixed wormlike micelle was about 0.45–0.85 µm. The present result provides an example to construct long wormlike micelles by anionic gemini surfactant.